M. Zhuo. “A Lumped-Element Directional Coupler for Bandwidth Enhancement, Impedance Matching, and Harmonic Suppressions,” International Journal of RF and Microwave Computer-Aided Engineering, vol. 2024, (2024). https://doi.org/10.1155/2024/6662753.
In the article titled “A Lumped-Element Directional Coupler for Bandwidth Enhancement, Impedance Matching, and Harmonic Suppressions,” there was an error in the referencing for Equations (2) and (3), which were incorrectly attributed to references [20] and [14]. These references should be corrected to [16] and [18], respectively.
We apologize for this error.